// entry-1, entry, entry+1, exit-1, and exit, exit+1.
	// entry and exit are conceptually the top of the block (phi functions)
	// entry+1 and exit-1 are conceptually the bottom of the block (ordinary defs)
	// entry-1 and exit+1 are conceptually "just before" the block (conditions flowing in)
	//
	// This simplifies life if we wish to query information about x
	// when x is both an input to and output of a block.

// IsField reports whether the variable is a struct field.
func (obj *Var) IsField() bool { return obj.isField }

// Origin returns the canonical Var for its receiver, i.e. the Var object
// recorded in Info.Defs.
//
// For synthetic Vars created during instantiation (such as struct fields or
// function parameters that depend on type arguments), this will be the

// IsField reports whether the variable is a struct field.
func (obj *Var) IsField() bool { return obj.isField }

// Origin returns the canonical Var for its receiver, i.e. the Var object
// recorded in Info.Defs.
//
// For synthetic Vars created during instantiation (such as struct fields or
// function parameters that depend on type arguments), this will be the

                  .Device("/gpu:0")
                  .Attr(kXlaClusterIdAttr, "launch0")
                  .Attr("_variable_start_index", 4)
                  .Finalize(&def));

  Status status;
  Node* launch = scope.graph()->AddNode(def, &status);
  TF_CHECK_OK(status);
  TF_CHECK_OK(scope.DoShapeInference(launch));
  scope.graph()->AddEdge(a.node(), 0, launch, 0);
  scope.graph()->AddEdge(b.node(), 0, launch, 1);

	if lit == nil {
		return nil
	}

	// Capture the *testing.T object for the first argument to the function
	// literal.
	if len(lit.Type.Params.List[0].Names) == 0 {
		return nil
	}

	tObj := info.Defs[lit.Type.Params.List[0].Names[0]]
	if tObj == nil {
		return nil
	}

	// Match statements that occur after a call to t.Parallel following the final
	// labeled statement in the function body.
	//

// TODO(adonovan): make this a library function or method of Info.
func imported(info *types.Info, spec *ast.ImportSpec) *types.Package {
	obj, ok := info.Implicits[spec]
	if !ok {
		obj = info.Defs[spec.Name] // renaming import
	}
	return obj.(*types.PkgName).Imported()

#define TENSORFLOW_COMPILER_JIT_COMPILABILITY_CHECK_UTIL_H_

#include <string>

#include "absl/algorithm/container.h"
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
#include "tensorflow/compiler/jit/defs.h"
#include "tensorflow/compiler/jit/device_util.h"
#include "tensorflow/compiler/jit/flags.h"
#include "tensorflow/compiler/jit/resource_operation_safety_analysis.h"
#include "tensorflow/compiler/tf2xla/const_analysis.h"

        (
            ["-gen-op-decls"],
            "runtime_fallback_ops.h.inc",
        ),
        (
            ["-gen-op-defs"],
            "runtime_fallback_ops.cc.inc",
        ),
    ],
    tblgen = "@llvm-project//mlir:mlir-tblgen",
    td_file = "runtime_fallback/runtime_fallback_ops.td",
    deps = [":runtime_fallback_ops_td_files"],
)

cc_library(
    name = "runtime_fallback_opdefs",
    srcs = [

			return false
		}
		if n.End() > pos {
			return n.Pos() <= pos
		}
		ident, ok := n.(*ast.Ident)
		if !ok || ident.Name == "_" {
			return true
		}
		obj := info.Defs[ident]
		if obj == nil || obj.Type() == nil {
			return true
		}
		if _, ok := obj.(*types.TypeName); ok {
			return true
		}
		// Prevent duplicates in matches' values.
		if _, ok = seen[obj]; ok {

  for (auto& n : nodes) {
    if (n.attr.empty()) {
      n.attr = {{"T", DT_FLOAT}};
    }
  }
  *g = FunctionDefHelper::Define(
      // Arg defs
      {"x: float", "dy: float"},
      // Ret val defs
      {"dx: float"},
      // Attr defs
      {},
      // Nodes
      nodes);
  return absl::OkStatus();
}

// A gradient containing only supported operators